Colony American Homes has come to market with a $513.6 million security backed by single-family rental homes, but some players in the space are starting to wonder if the returns on the bond will be anything special. Moody’s Investors Service and Kroll Bond Rating Agency rated the deal, which marks the second SFR securitization in four months. The other was a $479 million deal from Deutsche Bank and the Blackstone Group, which turned out to be oversubscribed. KBRA’s ratings on the Colony bond range...